Kanei Tsūhō was a widely circulated currency in Japan throughout the Edo period. It was first minted in the 13th year of the Kanei era (1636) and continued to be produced until the end of the Edo period.
The "Kanei Tsūhō" sand drawing on Ariake Beach is a colossal sand artwork measuring approximately 122 meters east to west, 90 meters north to south, and with a circumference of 345 meters. When viewed from the summit of Mount Kontandan, it appears as a beautiful circular shape. It is said to have been created overnight to welcome Lord Ikoma Takatoshi, the feudal lord, in the 10th year of the Kanei era (1633), and is considered unparalleled.
It is believed that those who see this coin-shaped design will enjoy good health, longevity, and financial abundance, as evidenced by recent cases of individuals who saw the design, purchased lottery tickets, and won large sums of money. This has led to its recognition as a spot of good fortune, attracting a large number of tourists. The design has also been featured in the title sequence of the TV show "Zeni-gata Heiji."